Green Star Polyp
Pachyclavularia violacea
What you need to keep a Green Star Polyp
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pH
8.1–8.4
Temperature
24–27 °C
Where to buy
Compare prices from SA aquarium shops listing Green Star Polyp.
Avg. price
R75
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Overview
What to know before you buy.
Green Star Polyps (GSP) are a fantastic beginner coral, known for their bright green, grass-like polyps that sway in the current. They grow as an encrusting mat and can quickly cover rocks, creating a living carpet of fluorescent green. Their hardiness and rapid growth make them a reef tank staple.
Key traits
Care guide
Keeping Green Star Polyp healthy in a South African setup.
Placement & light
Place it low in the tank at first and move it up over a few weeks if it stays closed or browns. Match flow to the coral: most fleshy corals want gentle, indirect flow.
Water parameters
Keep pH 8.1–8.4 and 24–27°C, with salinity around 1.025–1.026. Alkalinity, calcium and magnesium matter more than any single reading: keep them stable and test weekly.
Feeding
Filter feeder. Target-feed small meaty foods such as mysis once or twice a week.
Stinging & spacing
Many corals and anemones sting what they touch, some with sweeper tentacles that reach well beyond the colony at night. Leave clear space around Green Star Polyp as it grows.
Reef compatibility
Large angelfish and butterflyfish nip at corals and anemones; most reef fish, shrimp and snails leave it alone.
Propagation
Green Star Polyp can be fragged: cut or break a piece with a clean tool, glue it to a plug, and keep it in moderate light and flow while it heals.
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